CN103048597B - With CS 2for the method for insulating organic resin dielectric surface electric discharge in characteristic gas monitoring sulfur hexafluoride electrical equipment - Google Patents
With CS 2for the method for insulating organic resin dielectric surface electric discharge in characteristic gas monitoring sulfur hexafluoride electrical equipment Download PDFInfo
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- 239000011347 resin Substances 0.000 title claims abstract description 29
- 229920005989 resin Polymers 0.000 title claims abstract description 29
- 229910018503 SF6 Inorganic materials 0.000 title claims abstract description 20
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 229960000909 sulfur hexafluoride Drugs 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000012544 monitoring process Methods 0.000 title claims abstract description 13
- 239000007789 gas Substances 0.000 claims description 51
- 238000001514 detection method Methods 0.000 claims description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 238000004458 analytical method Methods 0.000 claims description 8
- 238000004587 chromatography analysis Methods 0.000 claims description 5
- 101100186130 Arabidopsis thaliana NAC052 gene Proteins 0.000 claims description 4
- 239000012159 carrier gas Substances 0.000 claims description 4
- 239000001307 helium Substances 0.000 claims description 4
- 229910052734 helium Inorganic materials 0.000 claims description 4
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 238000005070 sampling Methods 0.000 claims description 3
- 238000004451 qualitative analysis Methods 0.000 claims 3
- 238000004445 quantitative analysis Methods 0.000 claims 3
- 238000003822 preparative gas chromatography Methods 0.000 claims 1
- 230000010076 replication Effects 0.000 claims 1
- 238000009413 insulation Methods 0.000 description 7
- 230000003628 erosive effect Effects 0.000 description 4
- 230000014759 maintenance of location Effects 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000004817 gas chromatography Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003077 quantum chemistry computational method Methods 0.000 description 1
- 125000000472 sulfonyl group Chemical group *S(*)(=O)=O 0.000 description 1
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Abstract
Description
技术领域 technical field
本发明涉及一种电气设备绝缘状态监测领域，尤其是涉及一种以CS2为特征气体监测六氟化硫（SF6）电气设备中有机树脂绝缘介质表面放电的方法。 The invention relates to the field of monitoring the insulation state of electrical equipment, in particular to a method for monitoring the surface discharge of organic resin insulating media in sulfur hexafluoride (SF 6 ) electrical equipment using CS 2 as a characteristic gas.
背景技术 Background technique
六氟化硫(SF6)电气设备中大量使用了盘式绝缘子等有机树脂绝缘介质，而这些介质一旦表面发生放电将会产生不可逆的损害，最终造成绝缘崩溃，危及设备及人身安全。因此，在SF6电气设备的使用过程中必需要对其绝缘状态进行监测，避免发生危险情况的发生。 Sulfur hexafluoride (SF 6 ) electrical equipment uses a large number of organic resin insulating media such as disc insulators, and once the surface of these media is discharged, it will cause irreversible damage, and eventually cause insulation breakdown, endangering equipment and personal safety. Therefore, during the use of SF 6 electrical equipment, it is necessary to monitor its insulation state to avoid dangerous situations.
传统的对于SF6电气设备绝缘状态的监测包括特高频法（UHF）和化学成分分析法。特高频法通过检测SF6电气设备内部的放电信号来判断有机树脂绝缘介质是否发生放电。然而，UHF法无法实现故障类型识别，难以根据监测结果判断SF6电气设备内部的有机树脂绝缘介质是否受到放电损害。化学成分分析法通过SF6电气设备的SF6气体分解产物来判断有机树脂绝缘介质是否发生放电。常规监测的气体包括SO2、SO2F2等硫酰气体，但该类气体基本会出现在所有类型的放电中，无法根据他们来判断放电是否与有机树脂绝缘介质有关。而使用CF4、CO、CO2等含C物质的存在来判断SF6电气设备内部有机树脂绝缘缺陷也同样存在问题，因为它们的生成有可能与有机树脂绝缘介质有关，在生产SF6过程中，难免会将CF4、CO、CO2引入到GIS中。因此，需要找到一种有效监测SF6电气设备中有机树脂绝缘介质表面是否发生放电的方法。 Traditional monitoring of the insulation state of SF 6 electrical equipment includes ultra-high frequency (UHF) and chemical composition analysis. The UHF method judges whether the organic resin insulating medium is discharged by detecting the discharge signal inside the SF 6 electrical equipment. However, the UHF method cannot realize the identification of fault types, and it is difficult to judge whether the organic resin insulating medium inside the SF 6 electrical equipment is damaged by discharge based on the monitoring results. The chemical composition analysis method judges whether the organic resin insulating medium is discharged through the SF 6 gas decomposition products of SF 6 electrical equipment. Routinely monitored gases include sulfuryl gases such as SO 2 and SO 2 F 2 , but such gases basically appear in all types of discharges, and it is impossible to judge whether the discharge is related to the organic resin insulating medium based on them. The use of CF 4 , CO, CO 2 and other C-containing substances to judge the internal organic resin insulation defects of SF 6 electrical equipment also has problems, because their formation may be related to the organic resin insulation medium. During the production of SF 6 , will inevitably introduce CF 4 , CO, CO 2 into GIS. Therefore, it is necessary to find a method for effectively monitoring whether the surface of the organic resin insulating medium in SF6 electrical equipment is discharged.
发明内容 Contents of the invention
本发明的目的在于提供一种以CS2为特征气体监测六氟化硫（SF6）电气设备中有机树脂绝缘介质表面放电的方法。CS2性质稳定，根据量子化学计算表明，其产生途径与有机树脂绝缘介质的被侵蚀直接相关，而不是在SF6生产过程中被混入的杂质气体。该方法对SF6电气设备内的气体进行CS2定性和定量检测，用以判断六氟化硫（SF6）电气设备中有机树脂绝缘是否受到放电侵蚀，检测稳定，数据准确，对不同的SF6电气设备具有普适性。 The purpose of the present invention is to provide a method for monitoring surface discharge of organic resin insulating medium in sulfur hexafluoride (SF 6 ) electrical equipment with CS 2 as the characteristic gas. CS 2 is stable in nature, and according to quantum chemical calculations, its production path is directly related to the erosion of the organic resin insulating medium, rather than the impurity gas mixed in the SF 6 production process. This method carries out qualitative and quantitative detection of CS 2 gas in SF 6 electrical equipment to judge whether the organic resin insulation in sulfur hexafluoride (SF 6 ) electrical equipment is corroded by discharge. The detection is stable and the data is accurate. Different SF 6 Electrical equipment is universal.
本发明的目的是通过以下技术方案来实现的：一种以CS2为特征气体监测六氟化硫电气设备中有机树脂绝缘介质表面放电的方法，采集SF6电气设备内的气体样品进行CS2定性和定量检测，当检测到CS2存在时，有机树脂绝缘介质受到放电侵害。 The purpose of the present invention is achieved by the following technical solutions: a method for monitoring the surface discharge of organic resin insulating media in sulfur hexafluoride electrical equipment with CS 2 as a characteristic gas, collecting SF 6 gas samples in the electrical equipment for CS 2 Qualitative and quantitative detection, when the presence of CS 2 is detected, the organic resin insulating medium is violated by the discharge.
进一步地，本发明中对SF6电气设备内的气体样品随时进行CS2定量检测，当CS2的浓度随时间增加而增加时，有机树脂绝缘介质持续受到放电侵害。 Further, in the present invention, quantitative detection of CS 2 is performed on the gas samples in the SF 6 electrical equipment at any time. When the concentration of CS 2 increases with time, the organic resin insulating medium is continuously damaged by the discharge.
本发明中CS2定性和定量检测采用气相色谱法，检测步骤具体如下： CS among the present invention Qualitative and quantitative detection adopts gas chromatography, and detection step is specifically as follows:
(1)采集样品：采集SF6电气设备内的气体样品； (1) Collect samples: collect gas samples in SF 6 electrical equipment;
(2)取步骤(1)中的气体样品进行气相色谱分析，获得色谱分析数据； (2) Get the gas sample in step (1) and carry out gas chromatographic analysis to obtain chromatographic analysis data;
(3)将步骤(2)的获得的色谱分析数据与预定CS2标准数据进行比对，即可对气体样品中CS2进行定性和定量。 (3) Comparing the chromatographic analysis data obtained in step (2) with the predetermined CS 2 standard data, the CS 2 in the gas sample can be qualitatively and quantitatively determined.
所述步骤(1)中，根据DL/T1032-2006电气设备用六氟化硫（SF6）气体取样方法规定采集气体样品。 In the step (1), gas samples are collected according to the DL/T1032-2006 Sulfur Hexafluoride (SF 6 ) Gas Sampling Method for Electrical Equipment.
所述步骤(2)中，采用气相色谱仪并联检测器PDD对样品进行检测，色谱条件为： In described step (2), adopt gas chromatograph parallel detector PDD to detect sample, chromatographic condition is:
色谱柱采用极性色谱柱或非极性色谱柱； The chromatographic column adopts polar chromatographic column or non-polar chromatographic column;
气路连接： Gas connection:
a.载气：纯度99.999%以上氦气，输出压力0.5~0.6MPa； a. Carrier gas: helium with purity above 99.999%, output pressure 0.5~0.6MPa;
b.驱动气：氮气，驱动气输出压力为0.3~0.4MPa； b. Driving gas: nitrogen, the output pressure of driving gas is 0.3~0.4MPa;
分析条件： Analysis conditions:
PDD1信号输出：A； PDD1 signal output: A;
PDD2信号输出：B； PDD2 signal output: B;
进样压力：0.05～0.1MPa； Injection pressure: 0.05～0.1MPa;
柱炉初始30～50℃，保持6～10min，然后以每分钟10℃程序升到150～300℃，保持3～8分钟。 The initial temperature of the column furnace is 30-50°C, keep it for 6-10 minutes, then programmatically raise it to 150-300°C at 10°C per minute, and keep it for 3-8 minutes.
本发明所述的色谱柱采用TECPφ3×3mPORAPAKQ0.53mm×30mPORAPAKQφ3×3m毛细柱。 The chromatographic column of the present invention adopts TECPφ3×3mPORAPAKQ0.53mm×30mPORAPAKQφ3×3m capillary column.
本发明所述步骤(3)中，预定CS2标准数据是将CS2标准气体稀释成多个不同CS2浓度的标准气体，在相同的气相色谱条件下重复测定若干次，获得CS2标准数据，所述的色谱条件与步骤(2)的相同。 In step (3) of the present invention, predetermined CS 2 standard data is that CS 2 standard gas is diluted into the standard gas of a plurality of different CS 2 concentrations, repeats measurement several times under the same gas chromatography condition, obtains CS 2 standard data , the chromatographic conditions are the same as those of step (2).
本发明步骤(3)中所述的预定CS2标准数据为CS2的保留时间，以及CS2的浓度与峰面积相关的标准曲线。 The predetermined CS 2 standard data described in the step (3) of the present invention is the retention time of CS 2 and the standard curve related to the concentration of CS 2 and the peak area.
本发明具有以下优点：The present invention has the following advantages:
(1)本发明以CS2为特征气体进行有机树脂绝缘介质受到放电侵蚀的监测，检测稳定，数据准确，能有效地对六氟化硫（SF6）电气设备的有机树脂绝缘介质受到放电侵蚀的故障进行识别。 (1) The present invention uses CS 2 as the characteristic gas to monitor the organic resin insulating medium subjected to discharge erosion, with stable detection and accurate data, which can effectively prevent the organic resin insulating medium of sulfur hexafluoride (SF6) electrical equipment from being subjected to discharge erosion Identify the fault.
(2)本发明对不同的六氟化硫（SF6）电气设备具有普适性，不受现场湿度、温度、电场等因素干扰。 (2) The present invention has universal applicability to different sulfur hexafluoride (SF6) electrical equipment, and is not disturbed by on-site humidity, temperature, electric field and other factors.
(3)本发明对CS2的检测限较低，对CS2的识别灵敏。 (3) The detection limit of the present invention to CS 2 is low, and the recognition of CS 2 is sensitive.
(4)本发明可以实现在线监测，当检测到CS2的产生即可直接判断有机树脂绝缘介质受到侵蚀，而当CS2随检测时间的增长而增长，可直接判断有机树脂绝缘介质的侵蚀正在持续。 (4) The present invention can realize on-line monitoring, when detecting the generation of CS 2 , it can be directly judged that the organic resin insulating medium is eroded, and when CS 2 increases with the detection time, it can be directly judged that the erosion of the organic resin insulating medium is continued.
附图说明 Description of drawings
图1是本发明实施例的标准曲线。 Fig. 1 is the standard curve of the embodiment of the present invention.
具体实施方式 detailed description
本发明采用气相色谱仪并联检测器PDD以及以下色谱条件对气体样品中的CS2进行检测，均可达到本发明的目的： The present invention adopts gas chromatograph parallel detector PDD and following chromatographic conditions to detect CS in the gas sample, all can reach the purpose of the present invention:
色谱柱采用极性色谱柱或非极性色谱柱；如TECPφ3×3mPORAPAKQ0.53mm×30mPORAPAKQφ3×3m毛细柱。 The chromatographic column adopts polar chromatographic column or non-polar chromatographic column; such as TECPφ3×3mPORAPAKQ0.53mm×30mPORAPAKQφ3×3m capillary column.
气路连接： Gas connection:
a.载气：纯度99.999%以上氦气，输出压力0.5~0.6MPa； a. Carrier gas: helium with purity above 99.999%, output pressure 0.5~0.6MPa;
b.驱动气：氮气，驱动气输出压力为0.3~0.4MPa； b. Driving gas: nitrogen, the output pressure of driving gas is 0.3~0.4MPa;
分析条件： Analysis conditions:
PDD1信号输出：A； PDD1 signal output: A;
PDD2信号输出：B； PDD2 signal output: B;
进样压力：0.05～0.1MPa； Injection pressure: 0.05～0.1MPa;
柱炉初始30～50℃，保持6～10min，然后以每分钟10℃程序升到150～300℃，保持3～8分钟。 The initial temperature of the column furnace is 30-50°C, keep it for 6-10 minutes, then programmatically raise it to 150-300°C at 10°C per minute, and keep it for 3-8 minutes.
实施例一：Embodiment one:
制备标准曲线：Prepare standard curve:
色谱条件： Chromatographic conditions:
检测仪器与参数设定：采用色谱仪对样品进行检测。并联检测器PDD，采用TECPφ3×3mPORAPAKQ0.53mm×30mPORAPAKQφ3×3m毛细柱。具体参数设定如下所示： Detection instrument and parameter setting: use a chromatograph to detect the sample. The parallel detector PDD adopts TECPφ3×3mPORAPAKQ0.53mm×30mPORAPAKQφ3×3m capillary column. The specific parameter settings are as follows:
气路连接： Gas connection:
a.载气：纯度99.999%以上氦气，输出压力0.5~0.6MPa a. Carrier gas: helium with purity above 99.999%, output pressure 0.5~0.6MPa
b.驱动气：氮气，驱动气输出压力为0.3~0.4MPa b. Driving gas: Nitrogen, the output pressure of driving gas is 0.3~0.4MPa
分析条件： Analysis conditions:
PDD1极性：0量程：8信号输出：A PDD1 polarity: 0 range: 8 signal output: A
PDD2极性：1量程：8信号输出：B PDD2 polarity: 1 range: 8 signal output: B
进样压力：0.05MPa Injection pressure: 0.05MPa
柱炉初始40℃，保持8min，然后以每分钟10℃升到180℃，保持5分钟。（其中辅助1温度指的是5A柱的温度） The column oven was initially at 40°C, kept for 8 minutes, then raised to 180°C at a rate of 10°C per minute, and kept for 5 minutes. (Auxiliary 1 temperature refers to the temperature of 5A column)
基于以上参数设置，CS2可定性为： Based on the above parameter settings, CS 2 can be characterized as:
使用配气仪对CS2标气进行稀释，将稀释后的气体通入色谱仪进行检测，每个浓度气体测定3次，从而建立浓度梯度为0.189、0.378、1.133、1.89、3.024、3.78、7.56、18.847μL/L的标准曲线，如图1所示。 Use a gas distribution instrument to dilute the CS 2 standard gas, pass the diluted gas into the chromatograph for detection, measure each concentration of gas three times, and establish a concentration gradient of 0.189, 0.378, 1.133, 1.89, 3.024, 3.78, 7.56 , 18.847μL/L standard curve, as shown in Figure 1.
标准曲线相关参数如下: The relevant parameters of the standard curve are as follows:
(1)采集样品：根据DL/T1032-2006电气设备用六氟化硫（SF6）气体取样方法规定采集样品。 (1) Collect samples: collect samples according to DL/T1032-2006 Sulfur Hexafluoride (SF 6 ) gas sampling method for electrical equipment.
(2)取步骤(1)中的气体样品在上述色谱条件下进行气相色谱分析，获得CS2的峰面积及保留时间。 (2) Get the gas sample in step (1) and carry out gas chromatographic analysis under the above-mentioned chromatographic conditions to obtain the peak area and retention time of CS 2 .
(3)将步骤(2)的获得的CS2的峰面积和保留时间与CS2标准曲线以及CS2保留时间比对，即可对气体样品中CS2进行定性和定量。 (3) Comparing the peak area and retention time of CS 2 obtained in step (2) with the CS 2 standard curve and the CS 2 retention time, the CS 2 in the gas sample can be qualitatively and quantitatively determined.
当检测到CS2可判断设备内部有机树脂绝缘介质受到了放电侵蚀，当检测到CS2浓度随时间的增加而增加可判断设备内部有机树脂绝缘介质受到了放电侵蚀。 When CS 2 is detected, it can be judged that the organic resin insulating medium inside the equipment has been corroded by discharge. When the concentration of CS 2 increases with time, it can be judged that the organic resin insulating medium inside the equipment has been corroded by discharge.
本发明以上所述仅为本发明的优选实施例而已，并不用于限制本发明，尽管参照前述实施例对本发明进行了详细的说明，对于本领域的技术人员来说，其依然可以对前述实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。 The above descriptions of the present invention are only preferred embodiments of the present invention, and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still implement the foregoing The technical solution described in the example shall be modified, or some of the technical features shall be equivalently replaced. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.
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